Match List$-I$ with List$-II$

List$-I$	List$-II$
$(a)$ $2 \mathrm{SO}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow$ $2 \mathrm{SO}_{3}(\mathrm{~g})$	$(i)$ Acid rain
$(b)$ $\mathrm{HOCl}(\mathrm{g}) \stackrel{\mathrm{h} \nu}{\longrightarrow}$ $\dot{\mathrm{O}} \mathrm{H}+\dot{\mathrm{Cl}}$	$(ii)$ Smog
$(c)$ $\mathrm{CaCO}_{3}+\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow$ $\mathrm{CaSO}_{4}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2}$	$(iii)$ Ozone depletion
$(d)$ $\mathrm{NO}_{2}(\mathrm{~g}) \stackrel{\mathrm{h} v}{\longrightarrow}$ $\mathrm{NO}(\mathrm{g})+\mathrm{O}(\mathrm{g})$	$(iv)$ Tropospheric pollution

Choose the correct answer from the options given below.

• A

  $(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)$

• B

  $(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)$

• C

  $(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)$

• D

  $(a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)$